The invention belongs to the field of clinical medical examination, particularly relates to a
colloidal gold test strip for the combined detection of
procalcitonin (PCT) / C-reactive
protein (CRP). The
colloidal gold test strip comprises a test strip bottom lining, and a sample pad, a
polyester film on which gold-labeled antibodies are coated, a
coating film and absorbent paper which are sequentially overlapped with and adhered to each other on the test strip bottom lining, wherein the
coating film is provided with a
control line which coats a rabbit antimouse
immunoglobulin G (IgG)
antibody, and two detection lines which are parallel to the
control line and coat an
antibody which can be in specific binding with a to-be-detected
antigen PCT and an
antibody which can be in the specific binding with a to-be-detected
antigen CRP respectively; and two kinds of gold-labeled antibodies are provided, namely the antibody which is labeled by
colloidal gold and can be in the specific binding with the to-be-detected
antigen PCT and the antibody which is labeled by the colloidal gold and can be in the specific binding with the to-be-detected antigen CRP. By the
colloidal gold test strip, the PCT / CRP can be detected simultaneously, the accuracy of diagnosing an inflammatory reaction is improved, and the gold test strip is easy to operate.